Computing scale, balance, and beam.



N0. 764,045. PATENTED JULY 5, 1904. 1

I. E. DUNCAN COMPUTING SCALE, BALANCE, AND BEAM.

APPLIOATION FILED DBO. 12, 1902.

H0 MODEL.

1 9M410 wee arrow: u

UNITED STATES Patented July 5, 1904.

PATENT OEETcE.

JAMES E. DUNCAN, OF JENNINGS, LOUISIANA.

SPECIFICATION forming part of Letters Patent No. 764,045, dated July 5, 1904.

Application filed December 12, 1902. Serial No. 134,959. 1N0 model.)

To all whom it may concern.-

Be it known that I, J AMES E. DUNCAN, a citi- Zen of the United States, residing at Jennings, in the parish of Calcasieu and State of Louisiana, have invented a new and useful Computing Scale, Balance, and Beam, of which the following is a specification.

The invention relates to computing-scales.

The object of the present invention is to improve the construction of computing-scales and to provide a simple, inexpensive, and efficient construction adapted to be mounted on the graduated beam of a scale and capable of enabling a'poise or weight to slide longitudinally of the beam to balance and indicate the weight of the goods and of simultaneously exhibiting the price of the same.

A further object of the invention is to provide a device of this character in which the Weight or poise may be readily changed to arrange the scale for handling large and small quantities of goods.

T/Vith these and other objects in view the invention consists in the novel construction and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the claims hereto appended, it being understood that changes in the form, proportion, size, and minor details of construction within the scope of the claims may be made without departing from the spirit or sacrificing any of the advantages of the invention. I

In the drawings, Figure 1 is a perspective View of a portion of a computing-scale constructed in accordance with this invention. Fig. 2 is a transverse sectional view of the same. Fig. 3 is a detail view of the second removable rotary poise. Fig.4 is a detail horizontal sectional view illustrating the manner of mounting the slide on the scale-beam.

Like numerals of reference designate corresponding parts in all the figures of the 1lrawings.

1 designates a scale-beam, designed to be fu'lcrumed in the usual manner and to form a portion of an ordinary scale, and'it may be connected with a scale-pan or with a platform or other means for receiving the goods to be weighed in any desired manner. The scalebeam is provided with alongitudinal opening 2, formed by parallel inner and outer sides or bars 3 and 4, connected at their ends and adapted to be constructed integral with each other or in separate pieces, as may be desired. The scale-beam is provided at the inner and outer ends of the longitudinal opening 2 with inwardly or rearwardly extending arms 5 and 6, projecting above the upper edges of the parallel sides or bars 3 and 4 and supporting a longitudinal rack-bar 7. The rack-bar T, which is arranged parallel with the adjacent portion of the scale-beam, is provided at its inner edge with teeth which mesh with a rotary gear or wheel 8, having peripheral teeth and mounted on a slide 9. The slide 9 consists of an approximately rectangular casing having an opening 10 for the reception of the sides or bars 3 and 4, which constitute the body portion of the beam, and the said casing is adapted to slide longitudinally of the beam similar to an ordinary sliding poise. The casing may be constructed in any desired manner and may consist of front and rear plates and top and bottom connecting pieces or blocks 12 and 13. The plates are suitably secured to the top and bottom blocks by screws or other fastening devices to facilitate assembling the parts of the scale; but the casing may be castintegral, and the parts of the scale-beam may be constructed separate to permit the casing to be placed on the scale when assembling the parts. The casing is provided at its top and bottom with bearing-openings 14 and 15 for the reception of an upright journal or spindle 16, depending from the'horizontal gear-wheel S and extending through and arranged to slide in the longitudinal opening of the scalebeam. The gear-wheel 8, which is movable longitudinally of the scale-beam, is provided with an upwardly-extending stud 17, arranged at the center of the said gear-wheel S and adapted to lit in the socket 19 of a rotary weight or poise 18. The weight or poise 18, which has a contrally-arranged socket 19, is detaehably interlocked with the gear-wheel and is adapted to be readily removed therefrom for a purpose hereinafter explained. The socket 19 extends inward and upward from the lower face of the rotary poise, which is provided with an eecentrically-arranged recess or indentation 20, adapted to receive an eccentrically-arranged lug or projection 21 of the horizontal gearwheel, whereby the poise 18 is rigidly interlocked with the horizontal gear-wheel and positively rotates with the same when properly arranged thereon. The poise 18 is removable to enable asecond poise 22 of twice the Weight to be placed on the rotary gear.

The outer bar or side 3 of the scale-beam is provided at its-outer face with upper and lower graduations 23 and 24, dividing the scale-beam into pounds and ounces and fractions thereof in the usual manner, and the graduations at the lower edge of the front side of the scale-beam are indicated by numbers of twice the amount as those of the upper series of graduations and are used in connection with the heavier poise 22, which is twice the weight of the lighter poise 18. The rotary poises are provided with exterior gradnations and characters for designating the price of the goods weighed, and these graduations are arranged in annular series around the poises and are adapted to cooperate with the combined indicator and price bar or arm 25. The pricebar or arm, which is mounted in an upright position on the slide 9, is provided with a lower bracket portion 26, which is secured to the outer face-placeof the slide and which is provided with a horizontal recess forming upper and lower shoulders 27 and 28, located at the upper and lower faces of the horizontal gear-wheel and retaining the latter on the slide 9. The price arm or bar is provided at its upper portion with a vertical slot or bifurcation, forming two sides or portions, and this slot or opening 29 is adapted to expose a vertical series of graduations and characters of the rotary weight or poise. A vertical series of numbers 30 or other characters is arranged at one side of the sight aperture or opening 29 to correspond with the annular or horizontal graduations of the rotary poise. The upper slotted or bifurcated portion is reduced to provide thin blades or sides, which have curved inner faces and which are adapted to 'lie close to the rotary weight to enable the graduations or characters thereof to be readily ascertained at a glance. As the slide is moved outward on the graduated portion of the scale-beam the gear-wheel meshing with the teeth of the rack-bar rotates the removable weight or poise and the exterior annularly-arranged graduations are successively brought opposite the aperture or opening 29 of the combined indicator and price-bar. The numerals of the price graduations of the arm or bar 25 range from 1 to 10, and the graduations of the lighter poise-18 are designed for weighing goods varying in weight from one to five pounds, and these graduations correspond with the upper graduations of the scale-beam. The other poise 22, which corresponds with the lower graduations of the scale-beam, is provided with double the graduations of the lighter weight'and is designed for weighing goods varying in weight of five to ten pounds; but it will be readily apparent that the scale-beam may be constructed of any desired capacity and that the weights and the combined indicator and price bar or arm may be made of any size and any number of characters or graduations and indicatingrnarks may be employed. The improvements are also applicable to all kinds of scales having a scale-beam, and they may be applied to the larger class of platform-scales for weighing cars, hay, coal, and the like, and the graduations and corresponding characters will be arranged to suit thescale to which theyare applied. The poises are provided at their tops with suitable grips or handles, and they may be readily rotated on the centrally-arranged upwardly-projecting stud of the gear-wheel to bring the recess opposite the eceentricallyarranged projection of the gear-wheel.

The upright price arm or bar, which retains the gear-wheel -on the slide, is designed to be detachably secured to the latter, as indicated in the accompanying drawings; but any other means may be employed for effecting this result. r

It will be seen that the computing construction is exceedingly simple and inexpensive, that it is strong and durable and not liable to get out or order and become inoperative, and that the longitudinally-movable rotary poise which carries the graduations is detachably mounted on the gear-wheel to enable different poises bearing difl'erent graduations to be employed. It will also be clear that the improvements are applicable to all kinds of scales having scale-beams and that the poise or weight forms a drum or cylinder for bearing the graduations.

What I claim is-' 1. In ascale of the class described, the combination of a scale-beam provided with a' rack, a gear meshing with the rack and movable longitudinally of the beam and forming an exterior support, a graduated poise arranged on the support of the gear, and a price-bar movable with the gear, substantially as described.

2. In a scale of the class described, the combination of a scale-beam provided with a rack, a slide movable longitudinally of the scalebeam, an exterior gear mounted on the slide and meshing with the rack, an exteriorly-arranged graduated poise carried by the gear, and a price-bar carried by the slide and cooperating with the poise, substantially as described.

3. In a scale of the class described, the combination of a scale-beam havinga rack, a slide,

a gear mounted on the slide and meshing with the rack, a poise detachably connected with the gear and having exterior graduations,and a price-bar mounted on the slide and cooperating with the poise, substantially as described.

1. In a scale of the class described, the combination of a scale-beam provided with a rack, a slide movable longitudinally of the scalebeam, a gear-wheel mounted on the slide and meshing with the rackan. exteriorly-graduated poise detachably interlocked with the gear and carried by the same, whereby it is rotated when the slide is moved longitudinally of the scale-beam and a bar carried by the slide and provided with price-per-pound graduations, substantially as described.

5. In a scale of the class described, the combination of a scale-beam, a slide, an exteriorlyarranged rotary poise mounted on the slide and designed to be provided with exterior graduations, a bar fixed to the slide, and cooperating with the rotary poise and designed to be provided with price-per-pound graduations, and means for rotating the poise when the slide is moved along the scale-beam, substantiall y as described.

6. In a scale of the class described, the combination with a scale-beam, of a slide, an exteriorly-arranged rotary poise carried by the slide and removable to permit poises of different sizes to be employed and a price-bar also carried by the slide and cooperating with the poise, substantially as described.

7. In a scale of the class described, the combination with a scale-beam, of a slide, an upright exteriorly-arranged rotary poise carried by the slide and provided with graduations, said poise being removable to permit poises of different sizes to be employed, means for rotating the poise when the slide is moved longitudinally of the scale-beam, and a pricebar also carried by the slide and cooperating with the poise substantially as described.

8. In a scale of the class described, the combination with a scale-beam, of a slide, an exteriorly-arranged poise carried by the slide and provided with graduations, a price-bar also carried by the slide and cooperating with the graduations of the poise, said poise and pricebar being movable longitudinally of the scale-beam with the slide, and means for rotating one of such parts when the latter are moved longitudinally of the beam, substantially as described.

9. In a scale of the class described, the combination with a scale-beam, of a slide, an exteriorly-arranged rotary poise carried by the and provided with exterior graduations, and an upright bar mounted on the slide and provided with price-per- 'iound graduations, substantially as described.

11. In a scale of the class described, the combination of a scale-beam having a rack-bar and provided with a longitudinal opening, a slide mounted on the scale-beam, an exteriorlyarranged gear-wheel meshing with the rackbar and forming a support and having a journal or spindle mounted on the slide and ex-- tending through the opening of the beam, a bar provided with price-per-pound graduations, and a rotary poise having exterior graduations and carried by the gear-wheel and arranged on the support thereof, substanstantially as described.

12. In a scale of the class described, the combination of a scale-beam having a rack, aslide mounted on the scale-beam, a gear meshing with the rack, and journaled on the slide, said gear being provided with a central stud, a removable graduated weight or poise mounted on the gear-wheel and having a socket receiving the stud, means located eccentrically of the stud for interlocking the gear-wheel and the weight or poise, and a price-bar carried by the slide, substantially as described.

13. Inascale of the class described, the combination of a scale-beam having a rack, a slide movable longitudinally thereof, a gear meshing with the rack and mounted on the slide and provided with a centrally-arranged stud and having an eccentrically-arranged projection, a removable weight or poise having a socket arranged at its center and receiving the stud, said weight or poise being also provided with an eccentrically-arranged recess to receive the projection,and a price-bar carried by the slide, substantially as described.

14.. In a scale of the class described, the con1- bination of a scale-beam, a slide movable longitudinally thereof, a detachable exteriorlygraduated Weight carried by the slide a graduated price-bar also carried by the slide and 00- operating with the graduated weight, and means for rotating one of such parts when the slide is moved along the scale-beam, substantially as described.

15. In a scale of the class described, the combination of a scale-beam provided with a rack, a slide, an exteriorly-arranged graduated poise carried by the slide, said poise being detachable to permit a plurality of poises to be employed, a price-bar provided with graduations and cooperating with the poise, and gearing connected with one of said parts for rotating the same when the poise and the price-bar are moved longitudinally of the scale-beam, substantially as described.

16. In a scale of the class described, the cornbination of a scale-beam, a slide movablelongitudinally thereof, an exteriorly arranged graduated poise carried by the slide, said poise being detachable to permit poises of different IIO sizes to be employed, a price-bar carried by the slide and cooperating with the poise, and gearing for rotating one of the parts when the slide is moved longitudinally of the beam, substantially as described.

17 In a scale of the class described, the com" bination of a scale-beam having a rack, a slide, an eXteriorly arranged graduated poise carried by the slide and detachably mounted to permit a plurality of poises to be employed, a graduated price-bar also carried by the slide and cooperating with the poise, a gear-Wheel connected with one of said parts and mounted on the slide and meshing with the rack, whereby the said gear-wheel will be rotated when the slide is moved longitudinally of the scale; beam, substantially as described.

In testimony that I claim the foregoing as myown I have hereto afiixed my signature in the presence of two witnesses.

JAMES E. DUNCAN.

Witnesses:

JAs. B. NEIBERT, A. C. BRAINARD. 

